Fix QT_MAJOR_VERSION to QT_VERSION_MAJOR #163

Job	Run time
build (ubuntu-latest, ci-dev-client-only-qt5, 5.15)	3m 40s
build (ubuntu-latest, ci-dev-client-only-qt6, 6.5.*, qtshadertools qtscxml)	4m 51s
build (ubuntu-latest, ci-dev-client-and-ui-qt5, 5.15)	5m 45s
build (ubuntu-latest, ci-dev-client-and-ui-qt6, 6.5.*)	7m 58s
build (windows-latest, ci-dev-client-only-qt5, 5.15)	4m 3s
build (windows-latest, ci-dev-client-only-qt6, 6.5.*, qtshadertools qtscxml)	5m 51s
build (windows-latest, ci-dev-client-and-ui-qt5, 5.15)	7m 22s
build (windows-latest, ci-dev-client-and-ui-qt6, 6.5.*)	10m 19s
build (macos-latest, ci-dev-client-only-qt5, 5.15)	4m 21s
build (macos-latest, ci-dev-client-only-qt6, 6.5.*, qtshadertools qtscxml)	9m 58s
build (macos-latest, ci-dev-client-and-ui-qt5, 5.15)	8m 58s
build (macos-latest, ci-dev-client-and-ui-qt6, 6.5.*)	18m 40s
	1h 31m 46s

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